tert-butyl 4-(2-hydroxy-2-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)ethyl)-3-(2-hydroxyethyl)piperazine-1-carboxylate 在
氰基亚甲基三正丁基膦 作用下,
以
苯 为溶剂,
生成 tert-butyl (7S,10aS)-7-(4-methyl-1-oxo-3H-2-benzofuran-5-yl)-octahydropiperazino[1,2-d][1,4]oxazepine-2-carboxylate 、 tert-butyl (7S,10aR)-7-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)octahydro-2H-pyrazino[1,2-d][1,4]oxazepine-2-carboxylate